Review on Bosch 9697 Double Iridium Replacement by Kulwinder Hendrickson

According to my experience, these spark plugs have significantly improved my vehicle`s performance. The iridium material delivers a stronger and more consistent spark resulting in smoother acceleration and improved fuel efficiency. The downside is that they are more expensive than traditional spark plugs, but the benefits are worth the investment. Overall, I highly recommend upgrading to iridium spark plugs for a noticeable improvement in your vehicle's performance. .